A listing for 'Metal Gear Solid: V Definitive Ex' has appeared on Amazon UK.
Spotted by Reddit, the listing currently carries a placeholder December 31, 2016 date, but does not reveal what it may include. If it's legit, it's possible that the edition could include both Metal Gear Solid V: Ground Zeroes and Metal Gear Solid V: The Phantom Pain, both of which were released separately in 2014 and 2015.
Alternatively, it could simply be a re-release of The Phantom Pain with Metal Gear Online's DLC.
Konami has yet to announce plans for a Metal Gear Solid V re-release. VideoGamer has contacted the publisher for comment.